@cmy28 wrote:
I see. Interest should have been paid if they refunded it to my tax return. However they denied it and I now claiming it again by form 843.
Suppose my claim in form 843 is approved (of the original tax amount), would you think they would still add interest automatically (to the tax amount, not the penalty) given that it's a 843 not a tax return?
See this link.
https://www.irs.gov/payments/interest#pay
It also looks like the IRS does advise you can ask for interest. This will at least get your request on the record and document your reasons and calculations. However, I would not expect them to pay it unless it was one of the items where interest is authorized or required.
